<template>
    <div class="about">
        <h1>{{id? '编辑': '新建'}}广告位</h1>
        <el-form label-width="120px" @submit.native.prevent="save">
            <el-form-item label="名称">
                <el-input v-model="model.name"></el-input>
            </el-form-item>
            <el-form-item label="广告">
                <el-button size="small" @click="model.items.push({})">
                    <i class="el-icon-plus"></i>添加广告
                </el-button>
                <el-row type="flex" style="flex-wrap: wrap">
                    <el-col :md="18" v-for="(item,i) in model.items" :key="i">
                        <el-form-item label="图片">
                            <el-upload
                                    class="avatar-uploader"
                                    :action="uploadUrl"
                                    :show-file-list="false"
                                    :headers="getAuthHeaders()"
                                    :on-success="res => $set(item, 'image', res.url)"
                            >
                                <img v-if="item.image" :src="item.image" class="avatar" />
                                <i v-else class="el-icon-plus avatar-uploader-icon"></i>
                            </el-upload>
                        </el-form-item>
                        <el-form-item label="跳转链接(URL)">
                            <el-input  v-model="item.url"></el-input>
                        </el-form-item>
                        <el-form-item>
                            <el-button size="small" type="danger"
                                       @click="model.items.splice(0,1)">删除</el-button>
                        </el-form-item>
                    </el-col>
                </el-row>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" native-type="submit">保存</el-button>
            </el-form-item>
        </el-form>
    </div>

</template>
<script>

export default {
    props: {
        id: {}
    },
    data(){
        return {
            model: {
                items: []
            },

        }
    },
    methods: {
       async save(){
           console.log('save');
            //请求一个接口，进行数据的提交
        //   let res;
          if(this.id) {
              await this.$http.put(`api/ads/${this.id}`, this.model)
          } else {
              await this.$http.post('api/ads', this.model)
          }
           //页面进行重定向
           this.$router.push('/ads/list');
           this.$message({
               type:'success',
               message: '保存成功'
           })
        },

        async fetch(){
            const res = await this.$http.get(`api/ads/${this.id}`)
            this.model = Object.assign({}, this.model, res.data);
        },
    },
    created () {
        this.id && this.fetch()
    }
}
</script>
